Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
As December transitions into January, the average high-temperature rests at a still icy 37.9°F (3.3°C), maintaining a close resemblance to the previous month. Grasmere, during the nights of January, experiences an average temperature drop to a freezing cold 26.6°F (-3°C).Humidity
January is the most humid month, with an average relative humidity of 75%.Rainfall
In Grasmere, in January, during 10.3 rainfall days, 0.98" (25mm) of precipitation is typically accumulated. Throughout the year, there are 100.2 rainfall days, and 7.48" (190mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In Grasmere, during January, snow falls for 3.8 days and regularly aggregates up to 1.54" (39mm) of snow. Throughout the year, in Grasmere, there are 17.1 snowfall days, and 6.34" (161mm) of snow is accumulated.Daylight
In January, the average length of the day is 9h and 30min.On the first day of January, sunrise is at 8:12 am and sunset at 5:21 pm. On the last day of the month, sunrise is at 7:58 am and sunset at 5:55 pm MST.
Sunshine
In Grasmere, Idaho, the average sunshine in January is 6.4h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index of 2 during January leads to these instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in January?
What is the most humid month?
What is the average humidity in January?
How much does it rain in January?
How many days does it snow in January?
What is the average length of the day in January?
When are sunrise and sunset in January?
How many hours of sunshine does Grasmere have in January?
When is the lowest UV index?
What is the UV index intensity in January?
Average temperature in January
Grasmere, ID
- Average high temperature in January: 37.9°F
The warmest month (with the highest average high temperature) is July (91.2°F).
The month with the lowest average high temperature is December (36.7°F).
- Average low temperature in January: 26.6°F
The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is December (26.1°F).
Average pressure in January
Grasmere, ID
- Average pressure in January: 30.26"Hg
The month with the highest atmospheric pressure is January (30.26"Hg).
The months with the lowest atmospheric pressure are June and August (29.88"Hg).
Average wind speed in January
Grasmere, ID
- Average wind speed in January: 6.5mph
The windiest month (with the highest average wind speed) is April (8.8mph).
The calmest months (with the lowest average wind speed) are January and September (6.5mph).
Average humidity in January
Grasmere, ID
- Average humidity in January: 75%
The month with the highest relative humidity is January (75%).
The month with the lowest relative humidity is July (25%).
Average rainfall in January
Grasmere, ID
- Average rainfall in January: 0.98"
The wettest month (with the highest rainfall) is December (1.06").
The driest month (with the least rainfall) is August (0.2").
Average rainfall days in January
Grasmere, ID
- Average rainfall days in January: 10.3 days
The month with the highest number of rainy days is March (14.3 days).
The months with the least rainy days are July and August (3.7 days).
Average snowfall in January
Grasmere, ID
- Average snowfall in January: 1.54"
The month with the highest snowfall is December (2.64").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Grasmere, ID
- Average snowfall days in January: 3.8 days
The month with the highest number of snowfall days is December (5.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Grasmere, ID
- Average daylight in January: 9h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in January: 6h and 2min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 12min).
Average sunshine days in January
Grasmere, ID
- Average sunshine days in January: 18.1 days
The month with the most sunshine days is July (24 days).
The month with the least sunshine days is March (13.6 days).
Average UV index in January
Grasmere, ID
- Average UV index in January: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Grasmere, ID
- Average cloud cover in January: 33
The month with the most cloud cover is December (Cloud cover 35).
The months with the least cloud cover are July and August (Cloud cover 8).
Average visibility in January
Grasmere, ID
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Grasmere, Idaho, USA
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